Need your opinion...am I loosing it??????

Venetta
Hi Ladies...i am new to glow and havent really posted anything. I have just been viewing and liking comments or posts. I have 3 children with my youngest being 2. I believe i may have gotten the preggo bug but they say everytime you get pregnant your symptons are different. I have been having the throbbing breast sympton and i have been feeling "heavy" down in my lower abdomen...not sure if that counts as a sympton cause i never had that with my other 3. You would think i would know with 3 but geesh. Is the heavy feeling a sign?? I am in cycle day 21 and af is due next week. Am i loosing my mind?? I appreciate your feedback!!!!