Bad experience with pregnacare conception

Rose 🌹
Has anyone else had a negative experience with these preconception vitamins? 
Since taking them (4-5 months now) my ewcm has been non existent, I've been constantly constipated and bloated (sometimes going as long as 6-7 days without a no. 2) and generally feeling nauseous and crap. 
Stopped about a week ago and now just taking folic acid and feel so much better already. 
I'm angry I've wasted 3 months cause I'm positive they've had a negative impact on my fertile cm but onwards to cycle #4 without it!!!