I'm confused....

Ok so I've been throwing up for 13 days now but the reason why I'm so confused is that I started throwing up the day my period started. Now this month it lasted for 10 day which is normal for me because I last between 10-20 days. I know scary, right!! So I'm still throwing up, some smells make me nauseated and I'm craving crazy food. Now I've been pregnant 9 times before with 7 miscarriages, 1 ectopic pregnancy with 3 babies in my left tube and 1 on my right tube and 1 spontaneous abortion from rape. I'm scared to take a test because I don't want to devastate my fiancé again! I'm taking Casava Root supplements to help me hyper-ovulate, which I think is helping because I feel something like cramps happening in my lower tummy. Can anyone tell me how can I improve my chances of get pregnant without IVF? I've lost weight. Stopped smoking and drinking and seen my doctor.... Someone please can I have some advice...

Queen Flako