Hallow Baby,
You are confused on two queries. Let me answer them to you one by one.
You had one voluntary sex with an accidental condom tear. The second one you do not know, but thought it could be unprotected sex. However, in both the incidences you have taken emergency
contraceptive pills within 24 hours. These pills are known to have high success rate if taken well in time, which you have. Moreover, you had your menses. So you need not be worried about the
pregnancy.
Cramps in abdomen does not fall into the symptoms of early pregnancy. In fact any pain in lower abdomen, particularly colicky pain is a bad sign during early pregnancy. It suggests
abortion, ectopic pregnancy rupture, etc. untoward effects.
The symptoms of early pregnancy are missed periods, nausea and
vomiting,
frequent urination and breast symptoms which include engorgement with tenderness of the breasts, darkening of nipples and
areola with widening of areola and secretions through the nipples. You are not having any of these.
I feel you should not be worried about the chances of pregnancy. However, if you want to confirm, you may get urine pregnancy test and/or
ultrasonography performed 8-10 days after missed period (if you miss it).
The cramps in abdomen may not be due to HCG drops since they are not known to have this side effect. However, if you are following HCG diet also, it may make you feel week and cause some symptoms. Moreover, HCG diet being more rich in proteins, may cause discomfort in stomach.
I hope, You have been sufficiently explained.