Advice???

Holly • Got my BFP on the 8.7.14 xx
Well me and my partner decided we both wanted to try for a family starting in November. I had my implant removed on the 2nd of November 2013 I then had a period on the 7th and fell pregnant that month, on the 9th December I had 7 positive pregnant test and on the 11th of December I started bleeding, I had what was called a chemical pregnancy and then my next period in January was extremly painful, I gave up trying in March and fell pregnant that month, I lost that baby again on the 12th of April, I had another chemical pregnancy.
​I'm now due to come on my period tomorrow, im 13dpo today and feel very unsure if I could be pregnant again, I have extremly painful nipples and my breast are very full and hurt too. Have a hunger pain in my tummy but I'm not hungry and have no sign of my period. Feeling confused and nervous, what are people's views? Could I be pregnant and also why could I of had 2 chemical pregnancys? I don't want to test today I'll wait to see if my period comes, in more scared to test incase it's positive and I have yet another chemical. Really need some advice. Thanks for reading girls and look forward to hearing from you. Xxxx