Sleeping ideas?

I am a 23 female currently living in the UK. I have anxiety so the thought of calling the doctors or the pharmacy is a no go for me.

I am on sertraline (anti depression meds), Hana (birth control pill) and multivitamins.

I need something to help me sleep that doesn't mess around with my birth control or anti depression meds. Any ideas please? Or any good medical forums?
Sleeping ideas?
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