Can minoxidil 5% cause my low irritation

M26 with hair loss and visible thinning at the crown. Two years ago a dermatologist prescribed topical Minoxidil + Finasteride (10%) and oral Minoxidil 2.5 mg. no oral finastride After about 2 months I noticed reduced erections and absence of morning erections, so my family doctor advised me to stop the medicines. Within a week my erections and libido returned to normal. Recently after 2 years  I consulted another dermatologist because my hair loss increased. She prescribed only topical Minoxidil 5% (1 ml nightly) without Finasteride and said Minoxidil is not known to cause sexual side effects(many dermo said this same thing) . previously I can masterbate 2-3 times and was hard After using minoxidil  the first night I did not get a morning erection the next day. I can still get erections with sexual thoughts or masturbation, but they feel slightly weaker and morning erections are absent. Could this be psychological or related to Minoxidil? Should I continue the medication or stop it?