Aw mamsh, kaya mo yan, pero seryoso talaga kailangan mo bumalik sa OB mo asap dahil ang persistent pain like that plus the fever and cough ngayon ay hindi dapat balewalain, better safe than sorry lalo na first pregnancy mo pa lang. I know madaling mag-worry, lalo na pag walang time ang doctor to really talk, pero please don't wait until next scheduled visit; call the clinic or go to the ER if the pain gets worse or if the fever goes up, kasi pwede ring may infection na dapat ma-address agad para safe ang baby mo.