I had a baby 3 months ago and had 2 regular periods relatively soon after. My loss stopped after about 3 weeks and between 1-2 weeks later, I had my first period. I then had another period 3 weeks later and it has been 4 weeks since then but no sign of my next one. I am really worried! I have taken 2 pregnancy tests and they have both been negative but I don't know whether that could be because it is so early that I am taking them. I have not had unprotected intercourse were my boyfriend has ejaculated in me but I am worrying that the contraception may not have been sufficient.
Any help PLEASE?

While pregnancy is possible, it is also likely that your body is just still regulating from birth. Some women resume regular cycles with the very first period, others take a few months, and some will find their periods start a new regular pattern. If you happen to be breastfeeding, that will also add to the chances of irregular or absent periods.