Give Up Or Fight?

This is long so please be patient. I dont need bashing, i need advice pls . Thanks I broke up ith my bf for 3 years kc lagi cya nambabae..what triggers me n paalisin n cya sa apartment (i transferred to a new apartment para lng sknya dhil wla parking sa dati q inuupahan. Even if doble ung cost ng rent) is bcoz he's cheating me with her friend.. Lhat hols ng expenses shoulder q dhil kumuha cya ng car and mas mlaki nmn daw sahod q. Mdami n nkakahuli sknla. He left the apartment ng march 21 before his bday ng 24th.. Nahuli q kc n nagpapa book n cya ng out of town ksama c frend. April 9 ng my mkilala aq n bago and due to peer pressure, nging bf q cya. Call it rebound, pero i need a distraction at that time. Kasamahan q kc sa ofc c ex bf and ung frend nya. After my ex knows my new relationship, nkikipagbalikan cya.. Kaso dahil sa ginawa nya skn, doubtful n q.. The day after nya magmakaawa, ginawa nila public ung relation nila sa ofc nmin which shocks everyone. April 29 ng mag positive ang PT q. I was confused kung sino ang tatay. We only had contact twice ni new bf unprotected pa.. Pero even sa ex q lagi kmi wla protection. May 17 ng ma confirm sa ultrasound na im 7weeks and 6 days preggy. LMP q is mar 28. Di q cya mconsider n period kc i only had 1 day na sobra hina pa which makes me think na implantation bleeding cya. After 2 weeks ng mlman ni new bf na preggy aq, nag disappear n cya tangay ilan gamit q. When i was almost 5months pregnant ni contact aq ni ex asking who is the father of the baby. I told him i was not sure. At that time, he presses na mlaki possibilities na cya ang tatay. Hinayaan q cya n samahan aq sa checkup and he started buying me milk and vits. Kaso all of a sudden nagbago attitude nya ng magreresign c gf nya sa ofc and cries a lot during those period. Until now, sila pa rn ng gf nya although bumalik cya sa apartment q kc suggestion daw ng babae. Pero lagi nman hinahatak ng babae kung saan c ex kya prang wla dn aq kasama. Graveyard shift ni ex and morning aq.. Every weekend magksama sila and obviously staying sa motel kc c gf nkatira sa parents ksama ung anak niya. Single mom c gf na mahilig kumabit sa may asawa. Kaya cgro di mabitawan ex q kc this time single ito. Although kmi p ng ex q noon. I decided to give way pero lagi umayaw ex q. Panu daw kung cya ang tatay.. Pero recentlywla n cya gana. Ni indi nga q masamhan sa pagbili ng gmit ni baby. Im 30 weeks pregnant and ayaw q mastress kya aq n bumibitaw. Magaling magpaawa ung gf nya and na mamanipulate cya. I dont have anyone n tutulong skn kya hinayaan q na bumalik c ex. Kaso wla p dn kc lagi nman cya andun sa gf nya. Mnsan nagaabot ng 2k o 3k lng skn. Ayaw q sna mastress pero eversince n nlman q n preggy aq, d q ngawa matuwa o ienjoy pregnancy q. Should i stick to my desisyon n kumalas sknla? O hayaan q n lng because i needed help and wla mgiging tatay c baby? Di rin tanggap ng ex q ung anak ng gf nya. Who do you think is the father? Doubtful n ngaun c ex kc sa ni ffeed sknya ng gf nya.. Pero ayaw dn nmn aq bitawan ng tuluyan. Thank you in advance.