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While there's not a lot of medical research to support this idea, anecdotal evidence suggests that it can help.
One ingredient in certain cough syrups — guaifenesin — can help you get pregnant by thinning your cervical fluid, which enables sperm to travel through your cervix and fertilize an egg. If you know from taking your temperature every morning that you're ovulating, but you don't seem to be producing much wet, slippery, cervical fluid, guaifenesin might be all the help you need to get pregnant.
Guaifenesin, a common ingredient in cough syrups, is an "expectorant XXXXXXX That is, it relieves congestion by helping liquefy mucus in your lungs, allowing you to cough it up. And because it works systemically on all mucous membranes in your body, it can make your cervical fluid wetter, too.
The trick is to find a cough syrup in which guaifenesin is the only active ingredient. Many cough and cold medicines contain antihistamines that also work systemically in your body but have the reverse effect: They dry up mucus and diminish wet cervical fluid. And while you're trying to get pregnant, there's no reason to expose yourself to any other drugs unnecessarily.
These are prescription medicines so i advice you to speak with OBG specialist.
Hope I have provided the information you needed.
Wish you good health. Take care.

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