hai am 19yrz recently had a baby gal n th 3rd f may ths year,when was giving birth had problem with ma placent bt luckly it waz taken care of and waz fyn,injected a petogen on the 4th of may,since then had ma periods on and off n stopped lastwik,2dae had an unprotected sex could i be pregnant?,didnt go for my follow up appointment yesterdae