Confuse/scared

Irregular ang period q, unexpected after 4mos nabuntis aqo, now I have a 2yr & 9mo.old daughtr..my lapses pdn ang period q, confusing kc nun night ng 13 dnatnan aqo ulit and ngaun tsineck q ang pads q pwla n..nd mn lng lumakas all thru out ang period q. Worries q ngpmasahe p nmn aqo, and nd nwa2la un sakit s lower back q. Last period q last yr 1st smbng gabi.